你好，
可以使用WebRequest来实现，这篇MSDN文章提供了一套完整代码，How to: Send Data Using the WebRequest Class。然后使用String.Split就可以得到你想要的数据了。至于判断是否已经联网，我想也可以使用下面的代码，如果有回复，则可判断为已经联网。
Imports System.Net
Imports System.Text
Imports System.IO
'....
' Create a request using a URL that can receive a post.
Dim request As WebRequest = WebRequest.Create("http://hq.sinajs.cn/list=sh601006")
' Set the Method property of the request to POST.
request.Method = "POST"
' Create POST data and convert it to a byte array.
Dim postData As String = "This is a test that posts this string to a Web server."
Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
' Set the ContentType property of the WebRequest.
request.ContentType = "application/x-www-form-urlencoded"
' Set the ContentLength property of the WebRequest.
request.ContentLength = byteArray.Length
' Get the request stream.
Dim dataStream As Stream = request.GetRequestStream()
' Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length)
' Close the Stream object.
dataStream.Close()
' Get the response.
Dim response As WebResponse = request.GetResponse()
' Display the status.
Console.WriteLine(CType(response, HttpWebResponse).StatusDescription)
' Get the stream containing content returned by the server.
dataStream = response.GetResponseStream()
' Open the stream using a StreamReader for easy access.
Dim reader As New StreamReader(dataStream)
' Read the content.
Dim responseFromServer As String = reader.ReadToEnd()
' Display the content.
Console.WriteLine(responseFromServer)
' Clean up the streams.
reader.Close()
dataStream.Close()
response.Close()
Best regards,
Shanks Zen
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